Resilient tire for vehicle-wheels.



W. S. BROOKS. RESILIENT TIRE FOR VEHICLE WHEELS.

APPLICATION FILED FELS, 1912..

Patented'Apr. 8, 1913.

' it: pertains tomake and use the-same.

W L M. xs. or'aaaoa1osio,. Asses m- FREDERICK V5? M E DF E E I l'fi imv-ssconnsajo Gnome norm or Anson, OHIO. I

To all whom, z't may concern:

Be it knownthat I,*WILLIAM S. BRooKs, a" citizen of theUnited States of America, residing at Akron, in the county of Summit and State of Ohio, have "invented certain iicwland useful "Improvements in Resilient Tires for Vehicle-Wheels; and I-hereby'declarethe following to be a full, clear, and

exact description of theinvention, such as willlen'able others skilled in the art to which This invention relates to improvements. in resilient tires for vehicle-wheels, and pertains more especiallyto an elastic and com pressible tire jcomprising the following':-a flexibleouter. casing adapted to be applied to an -annular tire-holder and provided interiorly with a chamber arranged to extend circumferentially-pf'said tire-holder, and a flexible core which is arranged within said chamber and" composed ofelastic and compressible material and provided with reand extend cesses spaced. circumferentially ing transversely of the core.

The object of this invention is to produce a resilient wheel-tire of the character, indicated' which possesses great resiliency andmuch greater durability than a pneumatic tire. g 2

This invention consists more especially in the production, as a part of a tire of'the character indicated, of a coreso improved in contour as to render said core highly resilient without materially weakening the core.

In the accompanying drawings, Figure 1 is a cross-sectional view of a tire embodying my invention, which figure shows the tire applied to a tire-holder. Fig. 2 1s a side view of a portion of my improved core of the tire. Fig. 3 is a view taken along the line 33, Fig. 2, looking inwardly. Fig. 4 is a vertical section on line 44, Fig. 2, looking in the direction indicated'by the arrow.

Referring to said drawings, A, Fig. 1, in-

dicates a tire-holder which of course is made Specification of Letters Patent.

tire-holder A and is provided interiorly I Patented-Apr. 8, 1 913. .-r Application filed February 5,1912. swarm/675,434. *1"- with a chamber b.'extending circumfere tially of saidtire-holder.

Within the hollow casinglB "is a lea-,1. to

core D arranged within the chambenbandf extending 'circumferentially offith'e tir'eij' if; {holder A. Said core'isshjown composed of a single solid. piece. of elastic and compressible materialsuch, for instance as rubber.

terior of thecore ,fromtli'e central portion .6 Said core is provided withlrecesses .d'which are 'spaced circumferentially and extend','. transversely of the core Alternatereces ses d are shown staggered and-extend atthe Vein each recess at'said portioiifof said surface has a straight end wall 5} which is undercut" and substantially uniform in. width from} top' to bottom of the wallLThe end; wa1l;;5

of each recess (5 is arranged. "substantiaHyat a right angle to the bottofmh; of} the recess which bottom extends therefore} subseng";

tially st'raight between thefend's oft-he recess: I and preferably farther from a point j en.5

vtrally of the outercircumferentialsurface of; thecore inv the direction ofone side of the v corethan in the directionfofthe.other side] of the..core. It will beohsers'redtherieftir that each recess (1 is widest at its end (Q 5,that is, at its end whichis arranged ten trally of the outer circumferential surface of the core,and from said wall or end is gradually reduced in width'at the exterior of the core toward the opposite end of the recess, and the bottom of said recess is gradually reduced in width toward the last-mentioned end of the recess from said wall. It

will be observed therefore that in my improved core for a resilient tire of the charundercut end wall is substantially uniform in width from top to bottom. To avoid flabbiness in any portion of the core and to avoid unduly weakening the core said recess has a bottom arranged between and at an angle to opposite side walls o f the recess and also gradually reduced'in wldth toward the last-mentioned end of the recess. I would also remark that the staggered relation of nate recesses staggered is superior to a core i before described it isim having similar recesses without the stag-.

gered relation; 7

I would have it understood that to attain the maximum resiliency in the core hereinrtant not on] to have each recess forrne and arranged so that it extends transversely of the core and has an end wall adjacent the outer circumferential surface of the core, and that said wall is undercut and substantially uniform in width from top to bottom but to have said recess substantially as wide at the bottom as at the to thereof from end to end of the recess, an to have said recess and its bottom" wide enough at said wall. However to prevent the core from being unduly flabby an to have the core strong enough at the open end-of the'recess it is' not unimportant to have said recess and its bottom reduced in width in the direction in which said wall of the. recess faces.

. What I claim is:-

1. In a resilient tire for a vehicle-wheel,

the combination, with a flexible outerfcasing adapted to be applied to and extend circumferentially of an annular tire-holder,

which casing is provided interiorly with a chamber arranged to extend circumferentiallyof said tire-holder, of a flexible core occupying said chamber and. composed of ela'stlc and compressible material and having spaced circumferentially of the core, alternate recesses being staggered and extending at the extenor of the core from the outer clrcumferentlal surface of the core laterally in oppositedirections respectively and transversely of opposite sides, each recess at its end which is arranged centrally of said surface having an end wall which is undercut and substantially, uniform in width from top to bottom of the wall, and the bottom of said recess being widest at the aforesaid end of the recess and reduced in width toward the opposite end of the recess. v

2; A flexible core for a resilient wheeltire, which core is composed of elastic and compressible material and has recesses in each side of the core, which recesses are spaced circumferentially of the core and extend'atthe exterior of the core from the outer circumferential surface of the core laterally, said recesses at their ends which are arrangedat said surface having end walls 3. A flexible core for the interior of a resilient wheel-tire, which core is composed of elastic and compressible material and has recesses in each side of the core, which recesses are spaced circumferentially and extend a transversely of the core, each recess having an end wall adjacent the outer circumferen: etial surface of the core and being substantially as wide'at the bottom as at the top rection in which said wall faces.

In testimony whereof, I sign the forego Witnesses:

B. C. BROWN, N, L. 'MCDONNELL.

-' from end to end thereof, said recess and its bottom being reduced in width in the di I.

WILLIAM s. BRooKs y 

